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EPR, 11 18'S
Name Alias(es):
11.3 S, EPR
MGDS_FeatureID lowest in hierarchy:
Vent Sites:
Activity:
Maximum Temperature:
262
Latitude:
-11.3000
Longitude:
-110.5300
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
2650
Minimum Depth (mbsl):
Tectonic setting:
Full Spreading Rate (mm/a):
141.0
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
Lupton et al. (1999): "Dive targets at ... 11.3 S... were new sites which were visited by ALVIN for the first time in 1998/99. The selection of these new sites was based on camera tows conducted in the 1980's (Holler) and also by water column plume surveys conducted in 1993 and 1998.", "new sites of diffuse low temperature venting were discovered at 11.3 S"; Alvin dive 3323 log includes "Hi temp vents, Lo temp vents"
Notes Relevant to Biology:
Alvin dive 3323 log includes "Clams, Crabs, Mussels, Other worms, Snails/Limpets, Tube worms, Enteropneusts"
Year and How Discovered (if active, visual confirmation is listed first):
1985/86 or 1989 TV grab (need to check references to confirm activity); 1998 submersible Alvin
Discovery References (text):
[(TV grab) Holler (1993) Erscheinungsformen hydrothermaler Aktivität am Ostpazifischen Rücken zwischen 6° und 30° Süd. University of Göltingen. Verlag Shaker, 226 pp. (German dissertation)]
(submersible observations) Lupton, J., et al., Gas chemistry of hydrothermal fluids along the East Pacific Rise, 5°S to 32°S, Eos Trans. AGU, 80(46) Fall Meet. Suppl., F1099, 1999.
Other References (text):
RDF link: